Home / 78,448.15-108,259.53-42,638.14

Finding the Fourth Proportional to 78,448.15, 108,259.53 and 42,638.14

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Solution

The fourth proportional to 78,448.15, 108,259.53 and 42,638.14 is: 58,841.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,448.15 : 108,259.53 = 42,638.14 : x
  2. Step 2: Convert to fraction form
    78,448.15/108,259.53 = 42,638.14/x
  3. Step 3: Cross multiply
    78,448.15x = 108,259.53 × 42,638.14
  4. Step 4: Simplify right side
    78,448.15x = 4,615,984,455.18
  5. Step 5: Solve for x
    x = 4,615,984,455.18/78,448.15
  6. Step 6: Final answer
    x = 58,841.22

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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.