Home / 20,778,881.40-31,168,322.10-5,632,812.90

Finding the Fourth Proportional to 20,778,881.40, 31,168,322.10 and 5,632,812.90

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Solution

The fourth proportional to 20,778,881.40, 31,168,322.10 and 5,632,812.90 is: 8,449,219.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,778,881.40 : 31,168,322.10 = 5,632,812.90 : x
  2. Step 2: Convert to fraction form
    20,778,881.40/31,168,322.10 = 5,632,812.90/x
  3. Step 3: Cross multiply
    20,778,881.40x = 31,168,322.10 × 5,632,812.90
  4. Step 4: Simplify right side
    20,778,881.40x = 175,565,326,796,235.12
  5. Step 5: Solve for x
    x = 175,565,326,796,235.12/20,778,881.40
  6. Step 6: Final answer
    x = 8,449,219.35

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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.