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Finding the Fourth Proportional to 101,436.51, 139,981.14 and 56,110.98

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Solution

The fourth proportional to 101,436.51, 139,981.14 and 56,110.98 is: 77,432.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,436.51 : 139,981.14 = 56,110.98 : x
  2. Step 2: Convert to fraction form
    101,436.51/139,981.14 = 56,110.98/x
  3. Step 3: Cross multiply
    101,436.51x = 139,981.14 × 56,110.98
  4. Step 4: Simplify right side
    101,436.51x = 7,854,478,946.92
  5. Step 5: Solve for x
    x = 7,854,478,946.92/101,436.51
  6. Step 6: Final answer
    x = 77,432.46

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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.