Home / 53,931.40-80,897.10-30,603.40

Finding the Fourth Proportional to 53,931.40, 80,897.10 and 30,603.40

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Solution

The fourth proportional to 53,931.40, 80,897.10 and 30,603.40 is: 45,905.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,931.40 : 80,897.10 = 30,603.40 : x
  2. Step 2: Convert to fraction form
    53,931.40/80,897.10 = 30,603.40/x
  3. Step 3: Cross multiply
    53,931.40x = 80,897.10 × 30,603.40
  4. Step 4: Simplify right side
    53,931.40x = 2,475,726,310.14
  5. Step 5: Solve for x
    x = 2,475,726,310.14/53,931.40
  6. Step 6: Final answer
    x = 45,905.10

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1.5x scale

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.