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Finding the Fourth Proportional to 63,126.40, 94,689.60 and 39,779.20

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Solution

The fourth proportional to 63,126.40, 94,689.60 and 39,779.20 is: 59,668.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,126.40 : 94,689.60 = 39,779.20 : x
  2. Step 2: Convert to fraction form
    63,126.40/94,689.60 = 39,779.20/x
  3. Step 3: Cross multiply
    63,126.40x = 94,689.60 × 39,779.20
  4. Step 4: Simplify right side
    63,126.40x = 3,766,676,536.32
  5. Step 5: Solve for x
    x = 3,766,676,536.32/63,126.40
  6. Step 6: Final answer
    x = 59,668.80

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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.