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Finding the Fourth Proportional to 98,335.60, 135,663.48 and 56,915.34

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Solution

The fourth proportional to 98,335.60, 135,663.48 and 56,915.34 is: 78,520.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,335.60 : 135,663.48 = 56,915.34 : x
  2. Step 2: Convert to fraction form
    98,335.60/135,663.48 = 56,915.34/x
  3. Step 3: Cross multiply
    98,335.60x = 135,663.48 × 56,915.34
  4. Step 4: Simplify right side
    98,335.60x = 7,721,333,089.78
  5. Step 5: Solve for x
    x = 7,721,333,089.78/98,335.60
  6. Step 6: Final answer
    x = 78,520.22

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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.