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Finding the Fourth Proportional to 42,570.99, 63,801.63 and 39,913.74

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Solution

The fourth proportional to 42,570.99, 63,801.63 and 39,913.74 is: 59,819.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,570.99 : 63,801.63 = 39,913.74 : x
  2. Step 2: Convert to fraction form
    42,570.99/63,801.63 = 39,913.74/x
  3. Step 3: Cross multiply
    42,570.99x = 63,801.63 × 39,913.74
  4. Step 4: Simplify right side
    42,570.99x = 2,546,561,671.40
  5. Step 5: Solve for x
    x = 2,546,561,671.40/42,570.99
  6. Step 6: Final answer
    x = 59,819.18

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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.