Home / 90,328.16-135,576.28-45,988.08

Finding the Fourth Proportional to 90,328.16, 135,576.28 and 45,988.08

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Solution

The fourth proportional to 90,328.16, 135,576.28 and 45,988.08 is: 69,024.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,328.16 : 135,576.28 = 45,988.08 : x
  2. Step 2: Convert to fraction form
    90,328.16/135,576.28 = 45,988.08/x
  3. Step 3: Cross multiply
    90,328.16x = 135,576.28 × 45,988.08
  4. Step 4: Simplify right side
    90,328.16x = 6,234,892,810.74
  5. Step 5: Solve for x
    x = 6,234,892,810.74/90,328.16
  6. Step 6: Final answer
    x = 69,024.91

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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.