Home / 78,330.30-108,095.95-42,520.34

Finding the Fourth Proportional to 78,330.30, 108,095.95 and 42,520.34

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Solution

The fourth proportional to 78,330.30, 108,095.95 and 42,520.34 is: 58,678.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,330.30 : 108,095.95 = 42,520.34 : x
  2. Step 2: Convert to fraction form
    78,330.30/108,095.95 = 42,520.34/x
  3. Step 3: Cross multiply
    78,330.30x = 108,095.95 × 42,520.34
  4. Step 4: Simplify right side
    78,330.30x = 4,596,276,006.14
  5. Step 5: Solve for x
    x = 4,596,276,006.14/78,330.30
  6. Step 6: Final answer
    x = 58,678.14

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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.