Home / 78,897,856.30-118,262,803.65-30,356,953.90

Finding the Fourth Proportional to 78,897,856.30, 118,262,803.65 and 30,356,953.90

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Solution

The fourth proportional to 78,897,856.30, 118,262,803.65 and 30,356,953.90 is: 45,503,118.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,897,856.30 : 118,262,803.65 = 30,356,953.90 : x
  2. Step 2: Convert to fraction form
    78,897,856.30/118,262,803.65 = 30,356,953.90/x
  3. Step 3: Cross multiply
    78,897,856.30x = 118,262,803.65 × 30,356,953.90
  4. Step 4: Simplify right side
    78,897,856.30x = 3,590,098,478,487,801.50
  5. Step 5: Solve for x
    x = 3,590,098,478,487,801.50/78,897,856.30
  6. Step 6: Final answer
    x = 45,503,118.17

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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.