Home / 65,621.10-98,431.65-39,312.30

Finding the Fourth Proportional to 65,621.10, 98,431.65 and 39,312.30

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Solution

The fourth proportional to 65,621.10, 98,431.65 and 39,312.30 is: 58,968.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,621.10 : 98,431.65 = 39,312.30 : x
  2. Step 2: Convert to fraction form
    65,621.10/98,431.65 = 39,312.30/x
  3. Step 3: Cross multiply
    65,621.10x = 98,431.65 × 39,312.30
  4. Step 4: Simplify right side
    65,621.10x = 3,869,574,554.30
  5. Step 5: Solve for x
    x = 3,869,574,554.30/65,621.10
  6. Step 6: Final answer
    x = 58,968.45

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Similar ratio
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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.