Home / 38,648,971.20-53,336,242.80-21,246,049.92

Finding the Fourth Proportional to 38,648,971.20, 53,336,242.80 and 21,246,049.92

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Solution

The fourth proportional to 38,648,971.20, 53,336,242.80 and 21,246,049.92 is: 29,319,913.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,648,971.20 : 53,336,242.80 = 21,246,049.92 : x
  2. Step 2: Convert to fraction form
    38,648,971.20/53,336,242.80 = 21,246,049.92/x
  3. Step 3: Cross multiply
    38,648,971.20x = 53,336,242.80 × 21,246,049.92
  4. Step 4: Simplify right side
    38,648,971.20x = 1,133,184,477,074,040.50
  5. Step 5: Solve for x
    x = 1,133,184,477,074,040.50/38,648,971.20
  6. Step 6: Final answer
    x = 29,319,913.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.