Home / 80,807.68-121,211.76-39,225.52

Finding the Fourth Proportional to 80,807.68, 121,211.76 and 39,225.52

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Solution

The fourth proportional to 80,807.68, 121,211.76 and 39,225.52 is: 58,838.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,807.68 : 121,211.76 = 39,225.52 : x
  2. Step 2: Convert to fraction form
    80,807.68/121,211.76 = 39,225.52/x
  3. Step 3: Cross multiply
    80,807.68x = 121,211.76 × 39,225.52
  4. Step 4: Simplify right side
    80,807.68x = 4,754,594,316.12
  5. Step 5: Solve for x
    x = 4,754,594,316.12/80,807.68
  6. Step 6: Final answer
    x = 58,838.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.