Home / 90,985.29-136,450.40-31,809.93

Finding the Fourth Proportional to 90,985.29, 136,450.40 and 31,809.93

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Solution

The fourth proportional to 90,985.29, 136,450.40 and 31,809.93 is: 47,705.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,985.29 : 136,450.40 = 31,809.93 : x
  2. Step 2: Convert to fraction form
    90,985.29/136,450.40 = 31,809.93/x
  3. Step 3: Cross multiply
    90,985.29x = 136,450.40 × 31,809.93
  4. Step 4: Simplify right side
    90,985.29x = 4,340,477,513.42
  5. Step 5: Solve for x
    x = 4,340,477,513.42/90,985.29
  6. Step 6: Final answer
    x = 47,705.27

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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.