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Finding the Fourth Proportional to 89,988.92, 124,056.40 and 69,810.20

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Solution

The fourth proportional to 89,988.92, 124,056.40 and 69,810.20 is: 96,238.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,988.92 : 124,056.40 = 69,810.20 : x
  2. Step 2: Convert to fraction form
    89,988.92/124,056.40 = 69,810.20/x
  3. Step 3: Cross multiply
    89,988.92x = 124,056.40 × 69,810.20
  4. Step 4: Simplify right side
    89,988.92x = 8,660,402,095.28
  5. Step 5: Solve for x
    x = 8,660,402,095.28/89,988.92
  6. Step 6: Final answer
    x = 96,238.54

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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.