Home / 90,767.96-136,152.60-31,603.53

Finding the Fourth Proportional to 90,767.96, 136,152.60 and 31,603.53

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Solution

The fourth proportional to 90,767.96, 136,152.60 and 31,603.53 is: 47,405.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,767.96 : 136,152.60 = 31,603.53 : x
  2. Step 2: Convert to fraction form
    90,767.96/136,152.60 = 31,603.53/x
  3. Step 3: Cross multiply
    90,767.96x = 136,152.60 × 31,603.53
  4. Step 4: Simplify right side
    90,767.96x = 4,302,902,897.19
  5. Step 5: Solve for x
    x = 4,302,902,897.19/90,767.96
  6. Step 6: Final answer
    x = 47,405.53

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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.