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Finding the Fourth Proportional to 72,400.76, 109,094.40 and 59,541.20

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Solution

The fourth proportional to 72,400.76, 109,094.40 and 59,541.20 is: 89,717.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,400.76 : 109,094.40 = 59,541.20 : x
  2. Step 2: Convert to fraction form
    72,400.76/109,094.40 = 59,541.20/x
  3. Step 3: Cross multiply
    72,400.76x = 109,094.40 × 59,541.20
  4. Step 4: Simplify right side
    72,400.76x = 6,495,611,489.28
  5. Step 5: Solve for x
    x = 6,495,611,489.28/72,400.76
  6. Step 6: Final answer
    x = 89,717.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.