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Finding the Fourth Proportional to 86,302.64, 129,450.72 and 35,700.32

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Solution

The fourth proportional to 86,302.64, 129,450.72 and 35,700.32 is: 53,549.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,302.64 : 129,450.72 = 35,700.32 : x
  2. Step 2: Convert to fraction form
    86,302.64/129,450.72 = 35,700.32/x
  3. Step 3: Cross multiply
    86,302.64x = 129,450.72 × 35,700.32
  4. Step 4: Simplify right side
    86,302.64x = 4,621,432,128.23
  5. Step 5: Solve for x
    x = 4,621,432,128.23/86,302.64
  6. Step 6: Final answer
    x = 53,549.14

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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.