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Finding the Fourth Proportional to 97,838.88, 135,018.18 and 55,405.68

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Solution

The fourth proportional to 97,838.88, 135,018.18 and 55,405.68 is: 76,460.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,838.88 : 135,018.18 = 55,405.68 : x
  2. Step 2: Convert to fraction form
    97,838.88/135,018.18 = 55,405.68/x
  3. Step 3: Cross multiply
    97,838.88x = 135,018.18 × 55,405.68
  4. Step 4: Simplify right side
    97,838.88x = 7,480,774,075.26
  5. Step 5: Solve for x
    x = 7,480,774,075.26/97,838.88
  6. Step 6: Final answer
    x = 76,460.14

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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.