Home / 72,158.78-99,514.64-45,303.80

Finding the Fourth Proportional to 72,158.78, 99,514.64 and 45,303.80

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Solution

The fourth proportional to 72,158.78, 99,514.64 and 45,303.80 is: 62,478.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,158.78 : 99,514.64 = 45,303.80 : x
  2. Step 2: Convert to fraction form
    72,158.78/99,514.64 = 45,303.80/x
  3. Step 3: Cross multiply
    72,158.78x = 99,514.64 × 45,303.80
  4. Step 4: Simplify right side
    72,158.78x = 4,508,390,963.32
  5. Step 5: Solve for x
    x = 4,508,390,963.32/72,158.78
  6. Step 6: Final answer
    x = 62,478.76

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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.