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Finding the Fourth Proportional to 70,880.32, 97,810.96 and 39,042.96

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Solution

The fourth proportional to 70,880.32, 97,810.96 and 39,042.96 is: 53,877.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,880.32 : 97,810.96 = 39,042.96 : x
  2. Step 2: Convert to fraction form
    70,880.32/97,810.96 = 39,042.96/x
  3. Step 3: Cross multiply
    70,880.32x = 97,810.96 × 39,042.96
  4. Step 4: Simplify right side
    70,880.32x = 3,818,829,398.84
  5. Step 5: Solve for x
    x = 3,818,829,398.84/70,880.32
  6. Step 6: Final answer
    x = 53,877.15

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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.