Home / 9,121,155.65-12,587,194.27-4,991,187.28

Finding the Fourth Proportional to 9,121,155.65, 12,587,194.27 and 4,991,187.28

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Solution

The fourth proportional to 9,121,155.65, 12,587,194.27 and 4,991,187.28 is: 6,887,838.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121,155.65 : 12,587,194.27 = 4,991,187.28 : x
  2. Step 2: Convert to fraction form
    9,121,155.65/12,587,194.27 = 4,991,187.28/x
  3. Step 3: Cross multiply
    9,121,155.65x = 12,587,194.27 × 4,991,187.28
  4. Step 4: Simplify right side
    9,121,155.65x = 62,825,043,931,312.88
  5. Step 5: Solve for x
    x = 62,825,043,931,312.88/9,121,155.65
  6. Step 6: Final answer
    x = 6,887,838.16

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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.