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Finding the Fourth Proportional to 63,312.84, 87,388.98 and 39,425.40

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Solution

The fourth proportional to 63,312.84, 87,388.98 and 39,425.40 is: 54,417.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,312.84 : 87,388.98 = 39,425.40 : x
  2. Step 2: Convert to fraction form
    63,312.84/87,388.98 = 39,425.40/x
  3. Step 3: Cross multiply
    63,312.84x = 87,388.98 × 39,425.40
  4. Step 4: Simplify right side
    63,312.84x = 3,445,345,492.09
  5. Step 5: Solve for x
    x = 3,445,345,492.09/63,312.84
  6. Step 6: Final answer
    x = 54,417.80

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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.