Home / 31,506,081.20-47,259,121.80-18,031,828.40

Finding the Fourth Proportional to 31,506,081.20, 47,259,121.80 and 18,031,828.40

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Solution

The fourth proportional to 31,506,081.20, 47,259,121.80 and 18,031,828.40 is: 27,047,742.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,506,081.20 : 47,259,121.80 = 18,031,828.40 : x
  2. Step 2: Convert to fraction form
    31,506,081.20/47,259,121.80 = 18,031,828.40/x
  3. Step 3: Cross multiply
    31,506,081.20x = 47,259,121.80 × 18,031,828.40
  4. Step 4: Simplify right side
    31,506,081.20x = 852,168,374,632,299
  5. Step 5: Solve for x
    x = 852,168,374,632,299/31,506,081.20
  6. Step 6: Final answer
    x = 27,047,742.60

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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.