Home / 74,807.11-103,237.76-42,978.07

Finding the Fourth Proportional to 74,807.11, 103,237.76 and 42,978.07

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Solution

The fourth proportional to 74,807.11, 103,237.76 and 42,978.07 is: 59,312.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,807.11 : 103,237.76 = 42,978.07 : x
  2. Step 2: Convert to fraction form
    74,807.11/103,237.76 = 42,978.07/x
  3. Step 3: Cross multiply
    74,807.11x = 103,237.76 × 42,978.07
  4. Step 4: Simplify right side
    74,807.11x = 4,436,958,944.84
  5. Step 5: Solve for x
    x = 4,436,958,944.84/74,807.11
  6. Step 6: Final answer
    x = 59,312.00

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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.