Home / 80,612,638.65-120,895,531.92-31,417,543.08

Finding the Fourth Proportional to 80,612,638.65, 120,895,531.92 and 31,417,543.08

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Solution

The fourth proportional to 80,612,638.65, 120,895,531.92 and 31,417,543.08 is: 47,117,184.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,612,638.65 : 120,895,531.92 = 31,417,543.08 : x
  2. Step 2: Convert to fraction form
    80,612,638.65/120,895,531.92 = 31,417,543.08/x
  3. Step 3: Cross multiply
    80,612,638.65x = 120,895,531.92 × 31,417,543.08
  4. Step 4: Simplify right side
    80,612,638.65x = 3,798,240,582,276,115
  5. Step 5: Solve for x
    x = 3,798,240,582,276,115/80,612,638.65
  6. Step 6: Final answer
    x = 47,117,184.67

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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.