Home / 85,829,526.80-128,744,290.20-76,476,165.20

Finding the Fourth Proportional to 85,829,526.80, 128,744,290.20 and 76,476,165.20

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Solution

The fourth proportional to 85,829,526.80, 128,744,290.20 and 76,476,165.20 is: 114,714,247.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,829,526.80 : 128,744,290.20 = 76,476,165.20 : x
  2. Step 2: Convert to fraction form
    85,829,526.80/128,744,290.20 = 76,476,165.20/x
  3. Step 3: Cross multiply
    85,829,526.80x = 128,744,290.20 × 76,476,165.20
  4. Step 4: Simplify right side
    85,829,526.80x = 9,845,869,605,891,942
  5. Step 5: Solve for x
    x = 9,845,869,605,891,942/85,829,526.80
  6. Step 6: Final answer
    x = 114,714,247.80

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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.