Home / 31,931,442.72-47,927,445.36-19,764,101.28

Finding the Fourth Proportional to 31,931,442.72, 47,927,445.36 and 19,764,101.28

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Solution

The fourth proportional to 31,931,442.72, 47,927,445.36 and 19,764,101.28 is: 29,664,894.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,931,442.72 : 47,927,445.36 = 19,764,101.28 : x
  2. Step 2: Convert to fraction form
    31,931,442.72/47,927,445.36 = 19,764,101.28/x
  3. Step 3: Cross multiply
    31,931,442.72x = 47,927,445.36 × 19,764,101.28
  4. Step 4: Simplify right side
    31,931,442.72x = 947,242,884,186,706.12
  5. Step 5: Solve for x
    x = 947,242,884,186,706.12/31,931,442.72
  6. Step 6: Final answer
    x = 29,664,894.65

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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.