Home / 66,688,758.69-100,019,141.24-18,808,505.25

Finding the Fourth Proportional to 66,688,758.69, 100,019,141.24 and 18,808,505.25

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Solution

The fourth proportional to 66,688,758.69, 100,019,141.24 and 18,808,505.25 is: 28,208,810.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,688,758.69 : 100,019,141.24 = 18,808,505.25 : x
  2. Step 2: Convert to fraction form
    66,688,758.69/100,019,141.24 = 18,808,505.25/x
  3. Step 3: Cross multiply
    66,688,758.69x = 100,019,141.24 × 18,808,505.25
  4. Step 4: Simplify right side
    66,688,758.69x = 1,881,210,543,018,989
  5. Step 5: Solve for x
    x = 1,881,210,543,018,989/66,688,758.69
  6. Step 6: Final answer
    x = 28,208,810.30

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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.