Home / 8,736,856.20-13,113,060.30-5,138,123.40

Finding the Fourth Proportional to 8,736,856.20, 13,113,060.30 and 5,138,123.40

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Solution

The fourth proportional to 8,736,856.20, 13,113,060.30 and 5,138,123.40 is: 7,711,758.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,736,856.20 : 13,113,060.30 = 5,138,123.40 : x
  2. Step 2: Convert to fraction form
    8,736,856.20/13,113,060.30 = 5,138,123.40/x
  3. Step 3: Cross multiply
    8,736,856.20x = 13,113,060.30 × 5,138,123.40
  4. Step 4: Simplify right side
    8,736,856.20x = 67,376,521,973,041.03
  5. Step 5: Solve for x
    x = 67,376,521,973,041.03/8,736,856.20
  6. Step 6: Final answer
    x = 7,711,758.15

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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.