Home / 74,018.09-102,121-45,307.84

Finding the Fourth Proportional to 74,018.09, 102,121 and 45,307.84

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Solution

The fourth proportional to 74,018.09, 102,121 and 45,307.84 is: 62,510.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,018.09 : 102,121 = 45,307.84 : x
  2. Step 2: Convert to fraction form
    74,018.09/102,121 = 45,307.84/x
  3. Step 3: Cross multiply
    74,018.09x = 102,121 × 45,307.84
  4. Step 4: Simplify right side
    74,018.09x = 4,626,881,928.64
  5. Step 5: Solve for x
    x = 4,626,881,928.64/74,018.09
  6. Step 6: Final answer
    x = 62,510.15

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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.