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Finding the Fourth Proportional to 60,571,818.90, 90,857,728.35 and 28,212,966.90

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Solution

The fourth proportional to 60,571,818.90, 90,857,728.35 and 28,212,966.90 is: 42,319,450.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,571,818.90 : 90,857,728.35 = 28,212,966.90 : x
  2. Step 2: Convert to fraction form
    60,571,818.90/90,857,728.35 = 28,212,966.90/x
  3. Step 3: Cross multiply
    60,571,818.90x = 90,857,728.35 × 28,212,966.90
  4. Step 4: Simplify right side
    60,571,818.90x = 2,563,366,082,547,741.50
  5. Step 5: Solve for x
    x = 2,563,366,082,547,741.50/60,571,818.90
  6. Step 6: Final answer
    x = 42,319,450.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.