Home / 85,850,165.80-128,775,248.70-28,351,311.40

Finding the Fourth Proportional to 85,850,165.80, 128,775,248.70 and 28,351,311.40

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Solution

The fourth proportional to 85,850,165.80, 128,775,248.70 and 28,351,311.40 is: 42,526,967.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,850,165.80 : 128,775,248.70 = 28,351,311.40 : x
  2. Step 2: Convert to fraction form
    85,850,165.80/128,775,248.70 = 28,351,311.40/x
  3. Step 3: Cross multiply
    85,850,165.80x = 128,775,248.70 × 28,351,311.40
  4. Step 4: Simplify right side
    85,850,165.80x = 3,650,947,176,506,145
  5. Step 5: Solve for x
    x = 3,650,947,176,506,145/85,850,165.80
  6. Step 6: Final answer
    x = 42,526,967.10

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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.