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Finding the Fourth Proportional to 60,428.80, 90,740.40 and 43,904.80

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Solution

The fourth proportional to 60,428.80, 90,740.40 and 43,904.80 is: 65,927.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,428.80 : 90,740.40 = 43,904.80 : x
  2. Step 2: Convert to fraction form
    60,428.80/90,740.40 = 43,904.80/x
  3. Step 3: Cross multiply
    60,428.80x = 90,740.40 × 43,904.80
  4. Step 4: Simplify right side
    60,428.80x = 3,983,939,113.92
  5. Step 5: Solve for x
    x = 3,983,939,113.92/60,428.80
  6. Step 6: Final answer
    x = 65,927.82

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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.