Home / 70,355.02-97,080.90-40,138.60

Finding the Fourth Proportional to 70,355.02, 97,080.90 and 40,138.60

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Solution

The fourth proportional to 70,355.02, 97,080.90 and 40,138.60 is: 55,386.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,355.02 : 97,080.90 = 40,138.60 : x
  2. Step 2: Convert to fraction form
    70,355.02/97,080.90 = 40,138.60/x
  3. Step 3: Cross multiply
    70,355.02x = 97,080.90 × 40,138.60
  4. Step 4: Simplify right side
    70,355.02x = 3,896,691,412.74
  5. Step 5: Solve for x
    x = 3,896,691,412.74/70,355.02
  6. Step 6: Final answer
    x = 55,386.12

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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.