Home / 66,112,285.90-99,168,428.85-20,688,004.30

Finding the Fourth Proportional to 66,112,285.90, 99,168,428.85 and 20,688,004.30

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Solution

The fourth proportional to 66,112,285.90, 99,168,428.85 and 20,688,004.30 is: 31,032,006.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,112,285.90 : 99,168,428.85 = 20,688,004.30 : x
  2. Step 2: Convert to fraction form
    66,112,285.90/99,168,428.85 = 20,688,004.30/x
  3. Step 3: Cross multiply
    66,112,285.90x = 99,168,428.85 × 20,688,004.30
  4. Step 4: Simplify right side
    66,112,285.90x = 2,051,596,882,473,044
  5. Step 5: Solve for x
    x = 2,051,596,882,473,044/66,112,285.90
  6. Step 6: Final answer
    x = 31,032,006.45

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1.5x scale

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.