Home / 90,730.36-136,110.09-31,582.93

Finding the Fourth Proportional to 90,730.36, 136,110.09 and 31,582.93

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Solution

The fourth proportional to 90,730.36, 136,110.09 and 31,582.93 is: 47,379.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,730.36 : 136,110.09 = 31,582.93 : x
  2. Step 2: Convert to fraction form
    90,730.36/136,110.09 = 31,582.93/x
  3. Step 3: Cross multiply
    90,730.36x = 136,110.09 × 31,582.93
  4. Step 4: Simplify right side
    90,730.36x = 4,298,755,444.76
  5. Step 5: Solve for x
    x = 4,298,755,444.76/90,730.36
  6. Step 6: Final answer
    x = 47,379.46

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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.