Home / 78,316.22-108,073.64-42,505.51

Finding the Fourth Proportional to 78,316.22, 108,073.64 and 42,505.51

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Solution

The fourth proportional to 78,316.22, 108,073.64 and 42,505.51 is: 58,656.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,316.22 : 108,073.64 = 42,505.51 : x
  2. Step 2: Convert to fraction form
    78,316.22/108,073.64 = 42,505.51/x
  3. Step 3: Cross multiply
    78,316.22x = 108,073.64 × 42,505.51
  4. Step 4: Simplify right side
    78,316.22x = 4,593,724,973.23
  5. Step 5: Solve for x
    x = 4,593,724,973.23/78,316.22
  6. Step 6: Final answer
    x = 58,656.11

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1.5x scale

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.