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Finding the Fourth Proportional to 61,603.71, 85,006.80 and 45,479.58

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Solution

The fourth proportional to 61,603.71, 85,006.80 and 45,479.58 is: 62,757.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,603.71 : 85,006.80 = 45,479.58 : x
  2. Step 2: Convert to fraction form
    61,603.71/85,006.80 = 45,479.58/x
  3. Step 3: Cross multiply
    61,603.71x = 85,006.80 × 45,479.58
  4. Step 4: Simplify right side
    61,603.71x = 3,866,073,561.14
  5. Step 5: Solve for x
    x = 3,866,073,561.14/61,603.71
  6. Step 6: Final answer
    x = 62,757.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.