Home / 90,762.77-136,157.11-28,438.13

Finding the Fourth Proportional to 90,762.77, 136,157.11 and 28,438.13

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Solution

The fourth proportional to 90,762.77, 136,157.11 and 28,438.13 is: 42,661.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,762.77 : 136,157.11 = 28,438.13 : x
  2. Step 2: Convert to fraction form
    90,762.77/136,157.11 = 28,438.13/x
  3. Step 3: Cross multiply
    90,762.77x = 136,157.11 × 28,438.13
  4. Step 4: Simplify right side
    90,762.77x = 3,872,052,842.72
  5. Step 5: Solve for x
    x = 3,872,052,842.72/90,762.77
  6. Step 6: Final answer
    x = 42,661.25

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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.