Home / 78,894,254.30-118,341,381.45-21,386,433.20

Finding the Fourth Proportional to 78,894,254.30, 118,341,381.45 and 21,386,433.20

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Solution

The fourth proportional to 78,894,254.30, 118,341,381.45 and 21,386,433.20 is: 32,079,649.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,894,254.30 : 118,341,381.45 = 21,386,433.20 : x
  2. Step 2: Convert to fraction form
    78,894,254.30/118,341,381.45 = 21,386,433.20/x
  3. Step 3: Cross multiply
    78,894,254.30x = 118,341,381.45 × 21,386,433.20
  4. Step 4: Simplify right side
    78,894,254.30x = 2,530,900,049,176,144
  5. Step 5: Solve for x
    x = 2,530,900,049,176,144/78,894,254.30
  6. Step 6: Final answer
    x = 32,079,649.80

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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.