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Finding the Fourth Proportional to 79,280.76, 109,397.42 and 43,461.34

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Solution

The fourth proportional to 79,280.76, 109,397.42 and 43,461.34 is: 59,971.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,280.76 : 109,397.42 = 43,461.34 : x
  2. Step 2: Convert to fraction form
    79,280.76/109,397.42 = 43,461.34/x
  3. Step 3: Cross multiply
    79,280.76x = 109,397.42 × 43,461.34
  4. Step 4: Simplify right side
    79,280.76x = 4,754,558,465.74
  5. Step 5: Solve for x
    x = 4,754,558,465.74/79,280.76
  6. Step 6: Final answer
    x = 59,971.15

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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.