Home / 30,342,632.40-45,513,948.60-20,138,965.20

Finding the Fourth Proportional to 30,342,632.40, 45,513,948.60 and 20,138,965.20

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Solution

The fourth proportional to 30,342,632.40, 45,513,948.60 and 20,138,965.20 is: 30,208,447.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,342,632.40 : 45,513,948.60 = 20,138,965.20 : x
  2. Step 2: Convert to fraction form
    30,342,632.40/45,513,948.60 = 20,138,965.20/x
  3. Step 3: Cross multiply
    30,342,632.40x = 45,513,948.60 × 20,138,965.20
  4. Step 4: Simplify right side
    30,342,632.40x = 916,603,826,969,988.75
  5. Step 5: Solve for x
    x = 916,603,826,969,988.75/30,342,632.40
  6. Step 6: Final answer
    x = 30,208,447.80

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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.