Home / 86,019,615.20-129,029,422.80-64,520,530.40

Finding the Fourth Proportional to 86,019,615.20, 129,029,422.80 and 64,520,530.40

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Solution

The fourth proportional to 86,019,615.20, 129,029,422.80 and 64,520,530.40 is: 96,780,795.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,019,615.20 : 129,029,422.80 = 64,520,530.40 : x
  2. Step 2: Convert to fraction form
    86,019,615.20/129,029,422.80 = 64,520,530.40/x
  3. Step 3: Cross multiply
    86,019,615.20x = 129,029,422.80 × 64,520,530.40
  4. Step 4: Simplify right side
    86,019,615.20x = 8,325,046,796,261,853
  5. Step 5: Solve for x
    x = 8,325,046,796,261,853/86,019,615.20
  6. Step 6: Final answer
    x = 96,780,795.60

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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.