Home / 86,749,881.12-130,120,031.95-63,430,520.72

Finding the Fourth Proportional to 86,749,881.12, 130,120,031.95 and 63,430,520.72

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Solution

The fourth proportional to 86,749,881.12, 130,120,031.95 and 63,430,520.72 is: 95,142,278.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,749,881.12 : 130,120,031.95 = 63,430,520.72 : x
  2. Step 2: Convert to fraction form
    86,749,881.12/130,120,031.95 = 63,430,520.72/x
  3. Step 3: Cross multiply
    86,749,881.12x = 130,120,031.95 × 63,430,520.72
  4. Step 4: Simplify right side
    86,749,881.12x = 8,253,581,382,374,384
  5. Step 5: Solve for x
    x = 8,253,581,382,374,384/86,749,881.12
  6. Step 6: Final answer
    x = 95,142,278.89

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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.