Home / 88,128.69-121,572.54-56,264.10

Finding the Fourth Proportional to 88,128.69, 121,572.54 and 56,264.10

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Solution

The fourth proportional to 88,128.69, 121,572.54 and 56,264.10 is: 77,615.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,128.69 : 121,572.54 = 56,264.10 : x
  2. Step 2: Convert to fraction form
    88,128.69/121,572.54 = 56,264.10/x
  3. Step 3: Cross multiply
    88,128.69x = 121,572.54 × 56,264.10
  4. Step 4: Simplify right side
    88,128.69x = 6,840,169,547.81
  5. Step 5: Solve for x
    x = 6,840,169,547.81/88,128.69
  6. Step 6: Final answer
    x = 77,615.70

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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.