Home / 31,590.80-47,386.20-31,072.40

Finding the Fourth Proportional to 31,590.80, 47,386.20 and 31,072.40

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Solution

The fourth proportional to 31,590.80, 47,386.20 and 31,072.40 is: 46,608.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,590.80 : 47,386.20 = 31,072.40 : x
  2. Step 2: Convert to fraction form
    31,590.80/47,386.20 = 31,072.40/x
  3. Step 3: Cross multiply
    31,590.80x = 47,386.20 × 31,072.40
  4. Step 4: Simplify right side
    31,590.80x = 1,472,402,960.88
  5. Step 5: Solve for x
    x = 1,472,402,960.88/31,590.80
  6. Step 6: Final answer
    x = 46,608.60

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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.