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Finding the Fourth Proportional to 56,446.94, 77,897.68 and 30,955.64

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Solution

The fourth proportional to 56,446.94, 77,897.68 and 30,955.64 is: 42,719.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,446.94 : 77,897.68 = 30,955.64 : x
  2. Step 2: Convert to fraction form
    56,446.94/77,897.68 = 30,955.64/x
  3. Step 3: Cross multiply
    56,446.94x = 77,897.68 × 30,955.64
  4. Step 4: Simplify right side
    56,446.94x = 2,411,372,072.04
  5. Step 5: Solve for x
    x = 2,411,372,072.04/56,446.94
  6. Step 6: Final answer
    x = 42,719.27

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1.5x scale

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.