Home / 85,719,999.66-128,579,649.57-31,132,479.66

Finding the Fourth Proportional to 85,719,999.66, 128,579,649.57 and 31,132,479.66

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Solution

The fourth proportional to 85,719,999.66, 128,579,649.57 and 31,132,479.66 is: 46,698,592.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,719,999.66 : 128,579,649.57 = 31,132,479.66 : x
  2. Step 2: Convert to fraction form
    85,719,999.66/128,579,649.57 = 31,132,479.66/x
  3. Step 3: Cross multiply
    85,719,999.66x = 128,579,649.57 × 31,132,479.66
  4. Step 4: Simplify right side
    85,719,999.66x = 4,003,003,324,927,952.50
  5. Step 5: Solve for x
    x = 4,003,003,324,927,952.50/85,719,999.66
  6. Step 6: Final answer
    x = 46,698,592.40

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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.