Home / 103,543.45-155,285.10-40,349.47

Finding the Fourth Proportional to 103,543.45, 155,285.10 and 40,349.47

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Solution

The fourth proportional to 103,543.45, 155,285.10 and 40,349.47 is: 60,512.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,543.45 : 155,285.10 = 40,349.47 : x
  2. Step 2: Convert to fraction form
    103,543.45/155,285.10 = 40,349.47/x
  3. Step 3: Cross multiply
    103,543.45x = 155,285.10 × 40,349.47
  4. Step 4: Simplify right side
    103,543.45x = 6,265,671,483.90
  5. Step 5: Solve for x
    x = 6,265,671,483.90/103,543.45
  6. Step 6: Final answer
    x = 60,512.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.