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Finding the Fourth Proportional to 101,359.95, 139,875.74 and 56,039.04

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Solution

The fourth proportional to 101,359.95, 139,875.74 and 56,039.04 is: 77,333.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,359.95 : 139,875.74 = 56,039.04 : x
  2. Step 2: Convert to fraction form
    101,359.95/139,875.74 = 56,039.04/x
  3. Step 3: Cross multiply
    101,359.95x = 139,875.74 × 56,039.04
  4. Step 4: Simplify right side
    101,359.95x = 7,838,501,489.51
  5. Step 5: Solve for x
    x = 7,838,501,489.51/101,359.95
  6. Step 6: Final answer
    x = 77,333.32

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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.