Home / 212,018,030.97-318,031,031.92-66,448,369.46

Finding the Fourth Proportional to 212,018,030.97, 318,031,031.92 and 66,448,369.46

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Solution

The fourth proportional to 212,018,030.97, 318,031,031.92 and 66,448,369.46 is: 99,673,803.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,018,030.97 : 318,031,031.92 = 66,448,369.46 : x
  2. Step 2: Convert to fraction form
    212,018,030.97/318,031,031.92 = 66,448,369.46/x
  3. Step 3: Cross multiply
    212,018,030.97x = 318,031,031.92 × 66,448,369.46
  4. Step 4: Simplify right side
    212,018,030.97x = 21,132,643,506,842,816
  5. Step 5: Solve for x
    x = 21,132,643,506,842,816/212,018,030.97
  6. Step 6: Final answer
    x = 99,673,803.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.