Home / 65,746.40-98,619.60-42,126.80

Finding the Fourth Proportional to 65,746.40, 98,619.60 and 42,126.80

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Solution

The fourth proportional to 65,746.40, 98,619.60 and 42,126.80 is: 63,190.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,746.40 : 98,619.60 = 42,126.80 : x
  2. Step 2: Convert to fraction form
    65,746.40/98,619.60 = 42,126.80/x
  3. Step 3: Cross multiply
    65,746.40x = 98,619.60 × 42,126.80
  4. Step 4: Simplify right side
    65,746.40x = 4,154,528,165.28
  5. Step 5: Solve for x
    x = 4,154,528,165.28/65,746.40
  6. Step 6: Final answer
    x = 63,190.20

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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.