Home / 64,995,475.76-89,641,457.28-57,138,187.96

Finding the Fourth Proportional to 64,995,475.76, 89,641,457.28 and 57,138,187.96

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Solution

The fourth proportional to 64,995,475.76, 89,641,457.28 and 57,138,187.96 is: 78,804,722.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,995,475.76 : 89,641,457.28 = 57,138,187.96 : x
  2. Step 2: Convert to fraction form
    64,995,475.76/89,641,457.28 = 57,138,187.96/x
  3. Step 3: Cross multiply
    64,995,475.76x = 89,641,457.28 × 57,138,187.96
  4. Step 4: Simplify right side
    64,995,475.76x = 5,121,950,435,072,950
  5. Step 5: Solve for x
    x = 5,121,950,435,072,950/64,995,475.76
  6. Step 6: Final answer
    x = 78,804,722.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.