Home / 70,817.90-97,729.35-38,987.50

Finding the Fourth Proportional to 70,817.90, 97,729.35 and 38,987.50

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Solution

The fourth proportional to 70,817.90, 97,729.35 and 38,987.50 is: 53,803.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,817.90 : 97,729.35 = 38,987.50 : x
  2. Step 2: Convert to fraction form
    70,817.90/97,729.35 = 38,987.50/x
  3. Step 3: Cross multiply
    70,817.90x = 97,729.35 × 38,987.50
  4. Step 4: Simplify right side
    70,817.90x = 3,810,223,033.13
  5. Step 5: Solve for x
    x = 3,810,223,033.13/70,817.90
  6. Step 6: Final answer
    x = 53,803.11

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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.