Home / 8,142,402.30-12,213,603.45-5,272,620.90

Finding the Fourth Proportional to 8,142,402.30, 12,213,603.45 and 5,272,620.90

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Solution

The fourth proportional to 8,142,402.30, 12,213,603.45 and 5,272,620.90 is: 7,908,931.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,142,402.30 : 12,213,603.45 = 5,272,620.90 : x
  2. Step 2: Convert to fraction form
    8,142,402.30/12,213,603.45 = 5,272,620.90/x
  3. Step 3: Cross multiply
    8,142,402.30x = 12,213,603.45 × 5,272,620.90
  4. Step 4: Simplify right side
    8,142,402.30x = 64,397,700,814,782.11
  5. Step 5: Solve for x
    x = 64,397,700,814,782.11/8,142,402.30
  6. Step 6: Final answer
    x = 7,908,931.35

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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.