Home / 51,981.60-77,972.40-46,538.40

Finding the Fourth Proportional to 51,981.60, 77,972.40 and 46,538.40

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Solution

The fourth proportional to 51,981.60, 77,972.40 and 46,538.40 is: 69,807.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,981.60 : 77,972.40 = 46,538.40 : x
  2. Step 2: Convert to fraction form
    51,981.60/77,972.40 = 46,538.40/x
  3. Step 3: Cross multiply
    51,981.60x = 77,972.40 × 46,538.40
  4. Step 4: Simplify right side
    51,981.60x = 3,628,710,740.16
  5. Step 5: Solve for x
    x = 3,628,710,740.16/51,981.60
  6. Step 6: Final answer
    x = 69,807.60

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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.